John wakeham and john cunningham



(No Model.)

J. WAKE-HAM & J. CUNNINGHAM,

GRATE. No. 396,248. Patented Jan. 15, 1889.

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@/Mgz J M N. PETERS. Phoh-Uflwgnphe Washington. D. C-

UNITED STATES PATENT OFF CE.

JOHN W AKEHAH AND JOHN CUNNINGHAM, OF TORONTO, ONTARIO, CANADA.

GRATE.

SPECIFICATION forming part of Letters Patent No. 396,248, dated January 15, 1889.

Application filed April 5, 1888.

To all whom it may concern:

Be it known that we, JOHN \VAKEHAM and JOHN CUNNINGHAM, both mechanics, and both residents of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have jointly invented certain new and useful Improvements in Grates, of which the following is a specification.

The object of the invention is to design a serviceable grate which maybe easily shaken, and from which the clinkers may be readily removed; and it consists, essentially, of a grate having an open center and designed to be shaken in a longitudinal or horizontal direction, the center opening in the grate having an independent grate inserted in it and designed to be revolved, substantially as here inafter more particularly explained.

Figure l is a perspective view of our grate in its normal position. Fig. 2 is a similar view showing the center grate partially revolved. Fig. 3 is a view showing the grate tilted.

For the purpose of illustrating our invention we have chosen a rectangular stove-grate; but it will of course be understood that circular grates may also be constructed on the same principle, and that our grate will be equally as serviceable in furnaces.

A is a frame having a series of projecting fingers, 13, formed around it, as shown, and constituting a narrow grate extending around in proximity to the walls of the fire-pot.

C are trunnions formed on the grate A at either end and fitting into notches made in the frame of the stove or furnace.

D are a series of fingers formed around the spindle E, either in triangular shape, as indicated, or in any other angular form. The

spindle E is suitably journaled in the frame of the furnace or stove in such a position that Serial No. 269,744. (No model.)

the fiat surfaces of the lingers D in their normal position, as shown in Fig. l, are substantially level with the fingers 13. Room is left at the ends of the grate A to permit it to be shaken longitudinally, and the spindle E is so supported that it may be readily revolved for the purpose of causing the fingers D to act on the clinkers which may accumulate at the bottom of the fire.

The angular shape of the fingers causes them to grind up and remove the clinkers when the spindle is revolved, as specified. v

As the top surface of the fingersD are substantially level with the fingers B, the fire will not collect below any of the fingers, which are thus surrounded on three sides by open airspaces, which prevent the fingers from burning.

. It will be noticed that the trunnions C are set off the center of the grate A, so that when dumped the natural inclination of the grate will be to resume its horizontal position, and, owing to the location of the fingers D, it is impossible to dump the grate A farther than into a substantially vertical position.

\Vhat we claim as our invention is The combination, with the frame, of the 

